﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int radius = 10;
            int centerX = Console.WindowWidth / 2;
            int centerY = Console.WindowHeight / 2;

            for (int y = 0; y < Console.WindowHeight; y++)
            {
                for (int x = 0; x < Console.WindowWidth; x++)
                {
                    double d = Math.Sqrt((x - centerX) * (x - centerX) + (y - centerY) * (y - centerY));
                    if (d <= radius)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(" ");
                    }
                }
                Console.WriteLine();
            }
        }
    }
}
